Table 2c. Hazardous Material Shipment Characteristics by Hazard Class: Percent of Total for 2002 and 1997
Monday, July 2, 2012
Table 2c. Hazardous Material Shipment Characteristics by Hazard Class: Percent of Total for 2002 and 1997
[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys. Because of rounding, estimates may not be additive]
| Hazard class and description | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| Total | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Class 1, Explosives | 1.2 | 1.1 | 0.2 | 0.1 | 0.5 | S |
| Class 2, Gases | 11.2 | 9.0 | 9.7 | 7.7 | 11.4 | 8.8 |
| Class 3, Flammable liquids | 74.3 | 73.5 | 81.6 | 81.3 | 66.9 | 62.7 |
| Class 4, Flammable solids | 1.0 | 0.8 | 0.5 | 0.8 | 1.3 | 3.3 |
| Class 5, Oxidizers and organic peroxides | 0.8 | 0.9 | 0.6 | 0.5 | 1.3 | 1.5 |
| Class 6, Toxic (poison) | 1.3 | 1.9 | 0.4 | 0.4 | 1.3 | 1.0 |
| Class 7, Radioactive materials | 0.9 | 0.5 | – | – | – | – |
| Class 8, Corrosive materials | 5.8 | 7.8 | 4.1 | 5.5 | 11.1 | 14.6 |
| Class 9, Miscellaneous dangerous goods | 3.6 | 4.5 | 2.8 | 3.7 | 6.2 | 7.7 |
KEY:
– Represents and estimate equal to zero or less than 1 unit of
measure.
S Estimate does not meet publication standards b ecause of highly sampling
variability or poor response quality.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.